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Updated: Jun 5, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
Published on: May 20, 2014
Direct numerical simulations of statistically steady, homogeneous, isotropic fluid turbulence with polymer additives
Prasad Perlekar1, Dhrubaditya Mitra, Rahul Pandit
1Department of Mathematics and Computer Science, Eindhoven University of Technology, Eindhoven, The Netherlands. p.perlekar@tue.nl
Abstract:
We carry out a direct numerical simulation (DNS) study that reveals the effects of polymers on statistically steady, forced, homogeneous, and isotropic fluid turbulence. We find clear manifestations of dissipation-reduction phenomena: on the addition of polymers to the turbulent fluid, we obtain a reduction in the energy dissipation rate; a significant modification of the fluid-energy spectrum, especially in the deep-dissipation range; and signatures of the suppression of small-scale structures, including a decrease in small-scale vorticity filaments. We also compare our results with recent experiments and earlier DNS studies of decaying fluid turbulence with polymer additives.
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